Enumeration of Thai Pteridophytes Collected during 1965-66

North India and Burma to northern Thailand and Laos.
21. Selaginella chrysorhizos Spring, l.e. (1850) 251; Alston, l.e. (1951) 593.
PHITSANULOK: Tung Salaeng Luang National Park, on muddy rock in forest, alt.
300-600 m, T -2034. LOEY: Phu Kradung, on dry slope in dense forest, alt. ca. 1100 m,
T-374.
Assam, Thailand, Annam and Laos.
22. Selaginella kurzii Baker, ]. Bot. 23: 249. 1885; Alston, l.c. (1951) 593.
CHIANGMAI: Doi Chiangdao, on dry mountain slope in mixed forest, alt. 500-
1600m, T-4080; en route from Mae Klang Waterfall to Ban Yang, along Nam
Mae Klang, rather moist cleyey slope in forest, alto 350-600 m, T -2368.
Assam, Burma, northern Thailand and Malay Peninsula (?).
Equisetum L.
EQUISETACEAE
1. Equisetum debile Roxb. apud Yauch. Mon. Prel. 387. 1822; Tard. & C. Chr.
(1939-51) 546; Larsen, Dansk Bot. Ark. 23: 59. 1963.
CHIANGMAI: near Mae Klang Waterfall, interior of Chom Thong, wet ground
along stream in open place, alt. ca. 350 m, T -2263.
India to South China and Taiwan, south to Malaysia, east to Polynesia.
Ophioglossum L.
OPHIOGLOSSACEAE
1. Ophioglossum pendulum L. Sp. Pl. ed. 2, 2: 1518. 1763; Tard. & C. Chr.
(1939-51) 9; Holtt. (1954) 40.
NAKAwN SRITAMARAT: Khao Luang, tree trunk in dense evergreen forest, alt.
1100-1786 m, T -4794.
Madagascar to tropical Australia and the Pacific Islands through Malaysia,
north to India, Thailand, Tonkin, South China, Taiwan and the Ryukyus.
Helminthostachys Kaulf.
1. Helminthostachys zeylanica (L.) Hook. Gen. Fil. t. 47b. 1840; Tard. & C. Chr.
(1939-51) 10; Holtt. (1954) 42.
LORY: Phu Luang, from Ban Na Luang to north ridge, dry floor of mixed forest,
alt. ca. 700 m, T -1107; Phu Kradung, humus rich slope in light shade, alt. ca. 1000 m,
T-7518.
Ceylon, India, Burma, Thailand, Indo-China, South China, Taiwan, Ryukyu,
Malaysia generally, Queensland and New Caledonia.
Botrychium Sw.
1. Botrychium lanuginosum Wall. ex Hook. & Grev. Icon. Fil. 1: t. 79. 1831;
32 - 32-